Symptoms of Chronic Hives
Chronic hives, also known as chronic idiopathic urticaria, are characterized by red, itchy, raised welts on the skin, often called wheals. These welts can vary in size, appear anywhere on the body, and typically last more than six weeks, occurring at least twice weekly. The itching can range from mild to severe, sometimes disrupting sleep or daily activities. In some cases, chronic hives are accompanied by angioedema, a deeper swelling affecting areas like the face, lips, throat, hands, feet, or genitals. Unlike acute hives, which fade within 24 hours, chronic hives persist and may recur for months or even years.
Causes of Chronic Hives
The exact cause of chronic hives is often unknown, earning the term “idiopathic.” However, certain factors are associated with their development. People with autoimmune conditions, such as lupus or thyroid disease, are more prone to chronic hives, as the immune system may mistakenly attack healthy tissue, triggering welts. Other potential triggers include stress, infections, or certain medications, though these are less common. Unlike acute hives, which are often linked to recent viral infections or allergies, chronic hives typically lack a clear trigger, making diagnosis and management challenging.
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Key Differences from Acute Hives
While acute hives resolve within six weeks and are often tied to identifiable causes like allergies or infections, chronic hives persist longer and are frequently idiopathic. Understanding these differences helps patients and healthcare providers tailor effective management strategies.
This article is part of a series on chronic urticaria and hives, offering insights to help readers recognize symptoms and understand potential causes.
